In before Dylan loses his mind, lol. The whole GW causing cancer thing has been debunked over and over. The studies done on mice were insanely high doses. When compared to what a human would take it wasnt even in the ballpark. When S4 is metabolized, it binds to receptors in the eye. This can cause things like a yellow tint in your vision and a harder time adjusting from light to dark and dark to light. When you stop taking it, this goes away. There is no risk of vision loss. The key also is to stick to good sources so you are getting legit SARMs. I would recommend sarms.forsale